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SAT2物理词汇术语整理23

2019-10-03 13:12:32来源:网络

  为了帮助大家高效备考SAT,新东方在线SAT频道为大家带来SAT2物理词汇术语整理23,希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

  The following list defines all of the bold-faced words you encountered as you read this book.

  Reflected ray

  The ray of light that is reflected from a mirror or other reflecting surface.

  Reflection

  The phenomenon of light bouncing off a surface, such as a mirror.

  Refracted ray

  The ray of light that is refracted through a surface into a different medium.

  Refraction

  The bending of light as it passes from one medium to another. Light refracts toward the normal when going from a less dense medium into a denser medium and away from the normal when going from a denser medium into a less dense medium.

  Restoring force

  The force that causes simple harmonic motion. The restoring force is always directed toward an object’s equilibrium position.

  Right-hand rule

  A means of defining the direction of the cross product vector. To define the direction of the vector , position your right hand so that your fingers point in the direction of A, and then curl them around so that they point in the direction of B. The direction of your thumb shows the direction of the cross product vector.

  Rigid body

  An object that retains its overall shape, meaning that the particles that make up the rigid body stay in the same position relative to one another.

  Rotational kinetic energy

  The energy of a particle rotating around an axis.

  Rotational motion

  Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.

  Rutherford nuclear model

  The model of the atom according to which negatively charged electrons orbit a positively charged nucleus. This model was developed by Ernest Rutherford in light of the results from his gold foil experiment.

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